also: いせいのよい
威勢のいい · i-adjective (yoi/ii class)
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 威勢のいい | 威勢のよくない |
| Polite | 威勢のいいです | 威勢のよくないですalso 威勢のよくありません |
| Past polite | 威勢のよかったです | 威勢のよくなかったですalso 威勢のよくありませんでした |
| Past | 威勢のよかった | 威勢のよくなかった |
| Te-form | 威勢のよくて | 威勢のよくなくて |
| Adverbial | 威勢のよく | |
| Conditional | 威勢のよければ | 威勢のよくなければ |
| Tara conditional | 威勢のよかったら | 威勢のよくなかったら |
expression, i-adjective (yoi/ii class)
high-spirited; cheerful; assertive; vigorous
Describes a person or their manner as lively, confident, and full of energy; often used for someone who is boldly cheerful or aggressively upbeat.
He always greets people in a cheerful, vigorous voice.
The festival began with a lively, spirited shout.
Standard kanji spelling with the colloquial いい ending.
More formal or written variant using 良い and the reading よい.
Mixed spelling: kanji 威勢 with kana よい; less common but valid.
Compound of 威勢 (いせい, 'spirit, vigor, authority') + の (possessive particle) + いい/よい ('good'). The phrase literally means 'of good spirit' and is used as a set expression.